Reputation
13,272
Next privilege 15,000 Rep.
Protect questions
Badges
2 22 55
Newest
 Revival
Impact
~999k people reached

Apr
13
answered How to find Tangential/Radial/Angular Velocity for motion in any curve?
Apr
13
answered Equilibrium of a Solid Body
Apr
12
answered How does distance affect force?
Apr
12
comment Finding the force exerted by a mass at different contact points
You know gravity always acts through the center of mass. That is how you find the distribution. See my answer.
Apr
12
answered Finding the force exerted by a mass at different contact points
Apr
12
comment Finding the force exerted by a mass at different contact points
Is the box being lifted slowly and is in static equilibrium the entire time, or is it thrown up fast and its vertical acceleration needs to be accounted for?
Apr
12
revised Does inelastic collision say the ball bounces back to you when thrown at an angle on ground?
deleted 6 characters in body
Apr
12
comment Does inelastic collision say the ball bounces back to you when thrown at an angle on ground?
Treat the $\leftarrow$ as an assignment. It says assign $\dot{x}+\delta$ to $\dot{x}$. As far as the dots, they are just notation. You don't have to actually take a derivative. In code $\dot{x}_1$ would be a single variable xp_1. And $\Delta \dot{x}_1$ would be dxp_1 for example. You would need to code in 3×3 matrix to 3×1 vector multiplication thought.
Apr
12
comment Does inelastic collision say the ball bounces back to you when thrown at an angle on ground?
ok, things are easier in 2D. Follow the procedure in my answer. If you want friction it builds upon this.
Apr
12
answered Does inelastic collision say the ball bounces back to you when thrown at an angle on ground?
Apr
12
comment Does inelastic collision say the ball bounces back to you when thrown at an angle on ground?
Is this a 2D or a 3D simulation?
Apr
11
answered Acceleration of moving reference frame
Apr
11
comment Acceleration of moving reference frame
So it measures changes in linear momentum in an inertial frame.
Apr
11
answered The two causes for the factor 2 in Coriolis effect
Apr
11
comment How do I derive the formula of coefficient of restitution?
You can derive it because it is an empirical quantity. You can only define it.
Apr
11
answered What is the moment of inertia really?
Apr
11
comment What is the moment of inertia really?
Rotation about a fixed axis yields a single MMOI. But rotation in general (once you move the axis around) involves 6 quantities that are related to 3 principal quantities and 3 orientation angles.
Apr
11
comment Why did Einstein took speed of light unit or constant in his equation of relativity?
Maxwell's equations gave Einstein a clue about $c$ as a limit.
Apr
11
comment Proof derivative of a vector following precession motion
The bottom angle is not a metric (you cannot measure with it) because a full circle is not 360°. It is $2\pi\,\sin \alpha$. This is because $${\rm d}\theta_{bot} = {\rm d}\theta_{top} \sin \alpha$$ You can confirm this because it lies on the surface of a cone and not on a plane.
Apr
11
comment Proof derivative of a vector following precession motion
No it does not.